# Author:sp
# CreaTime: $(DATE)
# FileName: $(NAME)
# Description: simple introdution of the code
s='hello,world'
print('1',s.isidentifier())                #判断字符串是否为标准的标识符
print('2','pwdwd123'.isidentifier())
print('3','zhangsan_'.isidentifier())
print('4','张三_'.isidentifier())

print('5','\t'.isspace())            #判断字符串是否是空白字符组成
print('6','1\t'.isspace())

print('7','abcdweawe'.isalpha())            #判断字符串是否都是字母
print('8','sada12'.isalpha())
print('9','张三'.isspace())

print('10','\t'.isdecimal())                #判断字符串是十进制
print('11','8888sad'.isdecimal())
print('12','999'.isdecimal())

print('13','wqe123'.isnumeric())            #判断字符串是否都是数字
print('14','5464'.isnumeric())

print('15','张三123'.isalnum())              #判断字符串是否都是数字和字母
print('16','zhangsan123'.isalnum())
print('17','123'.isalnum())

